:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #1b1f24;
  --muted: #5d6673;
  --border: #dde1e6;
  --accent: #1f5fbf;
  --accent-text: #ffffff;
  --danger: #b42318;
  --ok: #1a7f37;
  --linkedin: #0a66c2;
  --code-bg: #eef1f4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --surface: #171b21;
    --text: #e6e9ed;
    --muted: #9aa4b1;
    --border: #2a3039;
    --accent: #5b9bff;
    --accent-text: #0b1220;
    --danger: #ff7b72;
    --ok: #56d364;
    --code-bg: #222831;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
[hidden] { display: none !important; }

.top, .bottom, main { max-width: 880px; margin: 0 auto; padding: 0 16px; }
.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 64px; }
.brand { font-weight: 600; color: var(--text); text-decoration: none; }
.who { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.avatar { width: 28px; height: 28px; border-radius: 50%; }

.hero { padding: 40px 0 24px; }
.hero h1 { font-size: clamp(28px, 5vw, 40px); line-height: 1.15; margin: 0 0 16px; letter-spacing: -0.01em; }
.lede { font-size: 18px; color: var(--muted); max-width: 680px; margin: 0; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  margin: 16px 0 32px;
}
.card h2 { margin: 0 0 8px; font-size: 20px; }
.card.center { text-align: center; }
.card.center p { max-width: 520px; margin-left: auto; margin-right: auto; }
.card-foot {
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 8px;
  border-top: 1px solid var(--border); margin-top: 24px; padding-top: 16px;
}

.button, button.primary {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 10px 18px; border-radius: 8px; border: 0;
  font: inherit; font-weight: 600; text-decoration: none; cursor: pointer;
}
.primary { background: var(--accent); color: var(--accent-text); }
.linkedin { background: var(--linkedin); color: #fff; margin: 8px 0; }
button.link { background: none; border: 0; padding: 0; color: var(--accent); font: inherit; cursor: pointer; text-decoration: underline; }
button.danger { color: var(--danger); }
button:disabled { opacity: 0.6; cursor: progress; }

.muted { color: var(--muted); }
.small { font-size: 14px; }
.error { color: var(--danger); margin: 16px 0 0; }

.steps { list-style: none; padding: 0; margin: 16px 0; }
.steps li { padding: 6px 0 6px 30px; position: relative; color: var(--muted); }
.steps li::before {
  content: ""; position: absolute; left: 4px; top: 11px;
  width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--border);
}
.steps li.done { color: var(--text); }
.steps li.done::before { background: var(--ok); border-color: var(--ok); }
.steps li.active { color: var(--text); font-weight: 600; }
.steps li.active::before { border-color: var(--accent); border-top-color: transparent; animation: spin 0.9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .steps li.active::before { animation: none; border-top-color: var(--accent); } }

.creds { display: grid; grid-template-columns: max-content 1fr; gap: 8px 16px; margin: 16px 0 20px; }
.creds dt { color: var(--muted); }
.creds dd { margin: 0; overflow-wrap: anywhere; }
code { background: var(--code-bg); padding: 2px 6px; border-radius: 4px; font-size: 15px; }

.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; padding: 8px 0 40px; }
.features h3 { margin: 0 0 4px; font-size: 16px; }
.features p { margin: 0; color: var(--muted); font-size: 15px; }

.bottom { padding: 24px 16px 40px; border-top: 1px solid var(--border); font-size: 14px; }